gcc openmp
时间: 2023-07-07 12:21:04 浏览: 162
您的问题是关于如何使用 GCC 编译器来编译 OpenMP 程序的吗?
如果是的话,您可以按照以下步骤进行操作:
1. 确保您的系统中已经安装了 GCC 编译器以及 OpenMP 库。
2. 使用以下命令编写一个包含 OpenMP 指令的 C/C++ 程序:
```
#include <stdio.h>
#include <omp.h>
int main () {
int num_threads = 4;
#pragma omp parallel num_threads(num_threads)
{
int thread_num = omp_get_thread_num();
printf("Hello world from thread %d\n", thread_num);
}
return 0;
}
```
这个程序会创建 4 个线程并行地打印出“Hello world”消息。
3. 使用以下命令来编译程序:
```
gcc -fopenmp program.c -o program
```
这个命令会将程序编译成一个可执行文件,其中包含了 OpenMP 库。
4. 运行程序:
```
./program
```
您应该会看到类似以下的输出:
```
Hello world from thread 0
Hello world from thread 1
Hello world from thread 2
Hello world from thread 3
```
希望这个回答能够解决您的问题!
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